Improvement in wire-straightening machines



eh 0. n h s 3 M In S an r- Patented Aug. 24, 1875.

WITNESSES INVENTOR J ATTORNEY N. PEIEIB. PHQTO-UTHOGRAPHER. WAS

NITED STATES PATENT Drrrn.

' CHARLES S. WARDWELL, OF LAKE VILLAGE, NEWV HAMPSHIRE.

IMPROVEMENT IN WIRE-STRAIGHTENING MACHINES.

Specification forming part of Letters Patent No. 166,953, dated August24, 1875; application filed February 27, 1875.

To all whom it may concern Be it known that I, CHARLES P. S. WARD- WELL,of Lake Village, in the county of Belknap and State of New Hampshire,have invented an Improved Wire-Straightening Machine; and I do herebydeclare that the following is a full and exact description thereof,reference being had to the accompanying drawings, making part of thisspecification-- Figure 1 being a top view of the machine; Fig. 2, a sideview of the same.

Like letters designate corresponding parts in all of the figures.

My invention is an improvement on wirestraighteners, such as shown anddescribed in Thomas Sands Letters Patent, dated February 23, 1863, for amachine for making machine knittingneedles.

That device is equivalent to one of the parts, as represented at A inthe accompanyin g drawings.

The great defect in that device arises from its continually revolving inone direction, thereby twisting the wire to a considerable extent, andmaking it unfit for many purposes, such as for the use of needle-making.

The nature of my invention consists in combining with a straightener, A,revolving in one direction, of another straightener, B, revolving in theopposite direction, the revolutions of the two straighteners being atequal, or nearly equal, speeds, or such that the twisting action of onestraightener shall fully counteract that of the other straightener,whereby the wire is left by, and comes from, the straighteners not onlyperfectly straight, but without any twist whatever. The twostraighteners also produce a more complete and perfect straightness thanone can effect.

In the drawings, the additional straightener B is shown as placedexactly in axial line with the first straightener A, and the wire a;runs through the axial center of both in holes made large enough toadmit the wire. A band or belt, a, goes from a pulley, b, on thestraightener A, to a pulley, c, on a drivingshaft, 0, situated in anysuitable position in relation to the machine, and a band or belt, 01,goes from a pulley, f, on the straightener B, to a pulley, g, on thedriving-shaft 0. But one of the bands or belts, as d, in this case, mustbe crossed, as shown, so as to drive the straightener B in the directionopposite to that of the straightener A.

It is, however, not essential, though preferable, to drive bothstraighteners by the same driving-shaft.

Of course, the pulleys b c are, respectively, equal to the pulleys f g;or the connection is otherwise made so as to produce equal, or nearlyequal, speeds in the two straighteners.

Each straightener has three pins, or equivalent parts, a 70 l,projecting inward, so as to bear at their inner ends against the wireand press it alternately in opposite directions a little beyond astraight line, as indicated; and the pins are held, respectively, byset-screws m n 19, so as to adjust their positions, and the amount ofdeviation from a straight line which they produce on the wire.

By means of this adjustment of the pins,

the twisting action of the straighteners can be varied without changingthe speed of the straighteners. Thus, the greater the deviation of thewire from a straight line, the greater the twisting action of thestraightener, so that if .one straightener twists the wire more thandoes the other, its middle pin 70 is drawn out a little, or the middlepin of the other straightener is moved in a little farther. By thismeans the adjustment is easily made perfect.

What I claim as my invention, and desire to secure by Letters Patent,is-

The combination of two wire-straighteners, A B, revolving in oppositedirections, operating substantially as and for the purpose hereinspecified.

Specification signed by me this 19th day of February, 1875.

G. P. S. WARDWELL.

Witnesses:

O. H. KEY, J 0s. W. WARDWELL.

